Example Programs

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Short-Time Fourier Transform


Computes the signal energy distribution in the time-frequency domain by using the short-time Fourier transform (STFT).



The short-time Fourier transform consists on obtaining the energy distribution on a section of a signal over time. This analysis is displayed on a joint time-frequency chart displaying the most energized frequencies over time.


LabVIEW 2012 (or compatible)


Steps to Implement or Execute Code
1. Open the "Moving STFT with Simulated Signal LV2012 - NIVerified.vi"
2. Select the Run button
3. Choose Select the Window and Sample lengths
4. Shift the sliders to see how the noise and frequency affects the displayed STFT chart.


Additional Information or References


Product Support Engineer
National Instruments